1 //===-- IA64TargetMachine.cpp - Define TargetMachine for IA64 -------------===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by Duraid Madina and is distributed under the
6 // University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the IA64 specific subclass of TargetMachine.
12 //===----------------------------------------------------------------------===//
14 #include "IA64TargetMachine.h"
16 #include "llvm/Module.h"
17 #include "llvm/PassManager.h"
18 #include "llvm/CodeGen/IntrinsicLowering.h"
19 #include "llvm/CodeGen/MachineFunction.h"
20 #include "llvm/CodeGen/Passes.h"
21 #include "llvm/Target/TargetOptions.h"
22 #include "llvm/Target/TargetMachineRegistry.h"
23 #include "llvm/Transforms/Scalar.h"
24 #include "llvm/Support/CommandLine.h"
25 #include "llvm/ADT/Statistic.h"
28 /// IA64TargetMachineModule - Note that this is used on hosts that cannot link
29 /// in a library unless there are references into the library. In particular,
30 /// it seems that it is not possible to get things to work on Win32 without
31 /// this. Though it is unused, do not remove it.
32 extern "C" int IA64TargetMachineModule;
33 int IA64TargetMachineModule = 0;
36 cl::opt<bool> DisableOutput("disable-ia64-llc-output", cl::Hidden,
37 cl::desc("Disable the IA64 asm printer, for use "
38 "when profiling the code generator."));
40 // Register the target.
41 RegisterTarget<IA64TargetMachine> X("ia64", " IA-64 (Itanium)");
44 unsigned IA64TargetMachine::compileTimeMatchQuality() {
45 #if defined(__ia64__) || defined(__IA64__)
52 unsigned IA64TargetMachine::getModuleMatchQuality(const Module &M) {
53 // we match [iI][aA]*64
55 std::string TT = M.getTargetTriple();
58 if( (TT[0]=='i' || TT[0]=='I') &&
59 (TT[1]=='a' || TT[1]=='A') ) {
60 for(unsigned int i=2; i<(TT.size()-1); i++)
61 if(TT[i]=='6' && TT[i+1]=='4')
66 return 50; // strong match
69 return compileTimeMatchQuality()/2;
73 /// IA64TargetMachine ctor - Create an LP64 architecture model
75 IA64TargetMachine::IA64TargetMachine(const Module &M, IntrinsicLowering *IL,
76 const std::string &FS)
77 : TargetMachine("IA64", IL, true),
78 FrameInfo(TargetFrameInfo::StackGrowsDown, 16, 0) { // FIXME? check this stuff
81 // addPassesToEmitFile - We currently use all of the same passes as the JIT
82 // does to emit statically compiled machine code.
83 bool IA64TargetMachine::addPassesToEmitFile(PassManager &PM,
85 CodeGenFileType FileType) {
86 if (FileType != TargetMachine::AssemblyFile) return true;
88 // FIXME: Implement efficient support for garbage collection intrinsics.
89 PM.add(createLowerGCPass());
91 // FIXME: Implement the invoke/unwind instructions!
92 PM.add(createLowerInvokePass());
94 // FIXME: Implement the switch instruction in the instruction selector!
95 PM.add(createLowerSwitchPass());
97 // Make sure that no unreachable blocks are instruction selected.
98 PM.add(createUnreachableBlockEliminationPass());
100 PM.add(createIA64PatternInstructionSelector(*this));
103 // Run optional SSA-based machine code optimizations next...
105 PM.add(createIA64SSAPeepholeOptimizerPass());
108 // Print the instruction selected machine code...
109 if (PrintMachineCode)
110 PM.add(createMachineFunctionPrinterPass(&std::cerr));
112 // Perform register allocation to convert to a concrete IA64 representation
113 PM.add(createRegisterAllocator());
115 if (PrintMachineCode)
116 PM.add(createMachineFunctionPrinterPass(&std::cerr));
118 if (PrintMachineCode)
119 PM.add(createMachineFunctionPrinterPass(&std::cerr));
121 // Insert prolog/epilog code. Eliminate abstract frame index references...
122 PM.add(createPrologEpilogCodeInserter());
124 /* XXX no, not just yet */
125 // PM.add(createIA64PeepholeOptimizerPass());
127 if (PrintMachineCode) // Print the register-allocated code
128 PM.add(createIA64CodePrinterPass(std::cerr, *this));
131 PM.add(createIA64CodePrinterPass(Out, *this));
133 // Delete machine code for this function
134 PM.add(createMachineCodeDeleter());
136 return false; // success!